src/gallium/drivers/llvmpipe/lp_jit.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * @file
  30  * C - JIT interfaces
  31  *
  32  * @author Jose Fonseca <jfonseca@vmware.com>
  33  */
  34
  35
  36 #include <llvm-c/Transforms/Scalar.h>
  37
  38 #include "util/u_memory.h"
  39 #include "gallivm/lp_bld_init.h"
  40 #include "gallivm/lp_bld_debug.h"
  41 #include "lp_screen.h"
  42 #include "gallivm/lp_bld_intr.h"
  43 #include "lp_jit.h"
  44
  45
  46 static void
  47 lp_jit_init_globals(struct llvmpipe_screen *screen)
  48 {
  49    LLVMTypeRef texture_type;
  50
  51    /* struct lp_jit_texture */
  52    {
  53       LLVMTypeRef elem_types[LP_JIT_TEXTURE_NUM_FIELDS];
  54
  55       elem_types[LP_JIT_TEXTURE_WIDTH]  = LLVMInt32Type();
  56       elem_types[LP_JIT_TEXTURE_HEIGHT] = LLVMInt32Type();
  57       elem_types[LP_JIT_TEXTURE_DEPTH] = LLVMInt32Type();
  58       elem_types[LP_JIT_TEXTURE_LAST_LEVEL] = LLVMInt32Type();
  59       elem_types[LP_JIT_TEXTURE_ROW_STRIDE] =
  60          LLVMArrayType(LLVMInt32Type(), LP_MAX_TEXTURE_LEVELS);
  61       elem_types[LP_JIT_TEXTURE_IMG_STRIDE] =
  62          LLVMArrayType(LLVMInt32Type(), LP_MAX_TEXTURE_LEVELS);
  63       elem_types[LP_JIT_TEXTURE_DATA] =
  64          LLVMArrayType(LLVMPointerType(LLVMInt8Type(), 0),
  65                        LP_MAX_TEXTURE_LEVELS);
  66       elem_types[LP_JIT_TEXTURE_MIN_LOD] = LLVMFloatType();
  67       elem_types[LP_JIT_TEXTURE_MAX_LOD] = LLVMFloatType();
  68       elem_types[LP_JIT_TEXTURE_LOD_BIAS] = LLVMFloatType();
  69       elem_types[LP_JIT_TEXTURE_BORDER_COLOR] =
  70          LLVMArrayType(LLVMFloatType(), 4);
  71
  72       texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
  73
  74       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
  75                              screen->target, texture_type,
  76                              LP_JIT_TEXTURE_WIDTH);
  77       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
  78                              screen->target, texture_type,
  79                              LP_JIT_TEXTURE_HEIGHT);
  80       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, depth,
  81                              screen->target, texture_type,
  82                              LP_JIT_TEXTURE_DEPTH);
  83       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, last_level,
  84                              screen->target, texture_type,
  85                              LP_JIT_TEXTURE_LAST_LEVEL);
  86       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, row_stride,
  87                              screen->target, texture_type,
  88                              LP_JIT_TEXTURE_ROW_STRIDE);
  89       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, img_stride,
  90                              screen->target, texture_type,
  91                              LP_JIT_TEXTURE_IMG_STRIDE);
  92       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
  93                              screen->target, texture_type,
  94                              LP_JIT_TEXTURE_DATA);
  95       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, min_lod,
  96                              screen->target, texture_type,
  97                              LP_JIT_TEXTURE_MIN_LOD);
  98       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, max_lod,
  99                              screen->target, texture_type,
 100                              LP_JIT_TEXTURE_MAX_LOD);
 101       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, lod_bias,
 102                              screen->target, texture_type,
 103                              LP_JIT_TEXTURE_LOD_BIAS);
 104       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, border_color,
 105                              screen->target, texture_type,
 106                              LP_JIT_TEXTURE_BORDER_COLOR);
 107
 108       LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
 109                            screen->target, texture_type);
 110
 111       LLVMAddTypeName(screen->module, "texture", texture_type);
 112    }
 113
 114    /* struct lp_jit_context */
 115    {
 116       LLVMTypeRef elem_types[LP_JIT_CTX_COUNT];
 117       LLVMTypeRef context_type;
 118
 119       elem_types[LP_JIT_CTX_CONSTANTS] = LLVMPointerType(LLVMFloatType(), 0);
 120       elem_types[LP_JIT_CTX_ALPHA_REF] = LLVMFloatType();
 121       elem_types[LP_JIT_CTX_STENCIL_REF_FRONT] = LLVMInt32Type();
 122       elem_types[LP_JIT_CTX_STENCIL_REF_BACK] = LLVMInt32Type();
 123       elem_types[LP_JIT_CTX_BLEND_COLOR] = LLVMPointerType(LLVMInt8Type(), 0);
 124       elem_types[LP_JIT_CTX_TEXTURES] = LLVMArrayType(texture_type,
 125                                                       PIPE_MAX_SAMPLERS);
 126
 127       context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
 128
 129       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, constants,
 130                              screen->target, context_type,
 131                              LP_JIT_CTX_CONSTANTS);
 132       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value,
 133                              screen->target, context_type,
 134                              LP_JIT_CTX_ALPHA_REF);
 135       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_front,
 136                              screen->target, context_type,
 137                              LP_JIT_CTX_STENCIL_REF_FRONT);
 138       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_back,
 139                              screen->target, context_type,
 140                              LP_JIT_CTX_STENCIL_REF_BACK);
 141       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
 142                              screen->target, context_type,
 143                              LP_JIT_CTX_BLEND_COLOR);
 144       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
 145                              screen->target, context_type,
 146                              LP_JIT_CTX_TEXTURES);
 147       LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
 148                            screen->target, context_type);
 149
 150       LLVMAddTypeName(screen->module, "context", context_type);
 151
 152       screen->context_ptr_type = LLVMPointerType(context_type, 0);
 153    }
 154
 155    if (gallivm_debug & GALLIVM_DEBUG_IR) {
 156       LLVMDumpModule(screen->module);
 157    }
 158 }
 159
 160
 161 void
 162 lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
 163 {
 164    if(screen->pass)
 165       LLVMDisposePassManager(screen->pass);
 166 }
 167
 168
 169 void
 170 lp_jit_screen_init(struct llvmpipe_screen *screen)
 171 {
 172    lp_build_init();
 173
 174    screen->module = lp_build_module;
 175    screen->provider = lp_build_provider;
 176    screen->engine = lp_build_engine;
 177    screen->target = lp_build_target;
 178
 179    screen->pass = LLVMCreateFunctionPassManager(screen->provider);
 180    LLVMAddTargetData(screen->target, screen->pass);
 181
 182    if ((gallivm_debug & GALLIVM_DEBUG_NO_OPT) == 0) {
 183       /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
 184        * but there are more on SVN. */
 185       /* TODO: Add more passes */
 186       LLVMAddCFGSimplificationPass(screen->pass);
 187       LLVMAddPromoteMemoryToRegisterPass(screen->pass);
 188       LLVMAddConstantPropagationPass(screen->pass);
 189       LLVMAddInstructionCombiningPass(screen->pass);
 190       LLVMAddGVNPass(screen->pass);
 191    } else {
 192       /* We need at least this pass to prevent the backends to fail in
 193        * unexpected ways.
 194        */
 195       LLVMAddPromoteMemoryToRegisterPass(screen->pass);
 196    }
 197
 198    lp_jit_init_globals(screen);
 199 }